Martin Casado and Steven Sinofsky on why AI is turning engineering problems into capital problems: Martin: "20 years ago, if you're a startup of 10 people and I gave you a billion dollars, what would you do with it?... In software, you hire people and then there's nothing you could do. The Mythical Man-Month is very real." "Right now, if I give 20 people a billion dollars, they can actually use it usefully... We've never been like that before." "This is like a law of physics where our early…